INP-HBT CHIP-SET FOR 40-GB S FIBER OPTICAL COMMUNICATION-SYSTEMS OPERATIONAL AT 3 V/

A chip set for a 40-Gb/s fiber optical communication system has been d esigned and fabricated, On-wafer measurements have been performed to v erify circuit operations, As far as available measurement capabilities show, all circuits are functionally fulfilling specifications for 40- Gb/s operation at less than or equal to 3-V supply voltage, During the design phase especially the influence of interconnects on signal inte grity was investigated and the results were implemented for automatic extraction, All the circuits were operational after the first processi ng round, No redesign was necessary.